Method oe turning ornamental forms



Unrrnn STATES PATENT orin'oi.

P. C. CAMBRIDGE, JR., OF NORTH ENFIELD, NEW HAMPSHIRE.

l METHOD OF TURNING ORNAMENTAL FORMS.

Specification of Letters Patent No. 15,327, dated July 15, 1856.

To all whom 'it 'may concern:

Be it` known that I, P. O. CAMBRIDGE, Jr., of North Enfield, in thecounty of Grafton and State of New Hampshire, have invented a new andImproved Machine for Turning Beaded VOrk; and I do hereby declare thatthe following is a full, clear, and exact description of the same,reference being had to the annexed drawings, making a part of thisspecilication, in which- Figure l, is a transverse vertical section ofmy improvement, Fig. 2, showing the plane of section. Fig. 2, is a planor top i view of the same.

Similar letters of reference indicate corresponding parts in the twofigures.

This invention relates to a new and improved machine for turning beadedwork for chair st-u, furniture legs, etc.

The invention consists in the employment or use of a sliding carriagewith tool holders, attached in a peculiar way, polygonal gage rack,collar, and stationary cutters, the

above parts being arranged and combined, as will be hereinafter fullyshown and described.

To enable others skilled in the art to fully understand and construct myinvention, I will proceed to describe it. n

A, A, represent two ways or guides, on which a carriage B, is fitted andworks. To one of the ways or guides A, at its inner side, there isattached a polygonal bar O, having notches cut on its sides at varyingdistances apart, and a pawl D, attached to the under side of thecarriage B, fits or catches in the notches of the bar C. The bar O, ishung or placed between center points, so that it may be turned, and theproper or desired side or face be presented to the pawl D. The pawl D,is a spring pawl and it is thrown out ofgear with the notches whennecessary, by a lever E, attached to the under side of the carriage B.On the carriage B, at one end there are placed two uprights F, F, towhich roughing olf cutters G, are attached, one to each, and an uprightplate H, is also attached to the carriage B, said plate having a collarI, fitted in it, and secured therein by set screws (a) which passthrough a box (b) in the upper part of the plate H.

J, represents a sliding carriage, which is fitted and works betweentransverse ways or guides on the carriage B. One end of the slidingcarriage B, has an arm K, attached to it, and a lever L, is connected tothe arm K, the lower end of the lever being attached by a joint to aprojecting arm M, at the side of the carriage B. At each end of thesliding carriage J, there is attached a concave bed N, in or on which,beds O, are-fitted, the bottoms of the beds O, being of convex form,corresponding inversely with the beds N.

P, P, are clamps which extend over the beds O, the lower ends of theclamps catching under the edges of the beds N, set screws (CZ) passthrough the clamps P, and bind the tools Q, R, firmly upon t-he beds O.One of the tools Q, is a beading tool, the other is a smooth chisel, asshown clearly in Fig. 2.

The stu S, shown in red, is centered between the heads of an ordinaryturning lathe, andthe guides or ways A, A, may serveV as the bed of thelathe. As lthe stuff S, is rotated, the carriage B, is moved in thedirection indicated by the arrow in Fig. 2. The cutters G, rough off thework, and the sliding carriage B, is moved back and forth by hand, thetools Q, B, acting alternately upon the stuff, and cutting alternatelybeads (c) and smooth cylindrical portions (f), see Fig. 2, as the toolsQ, R, cut, the carriage B, is kept stationary in consequence of the pawlD, catching into the notched sides of the bar O, the notches of coursebeing placed at the requisite distance apart to suit the character ofthe work, and each side of the bar has notches cut in it, at varyingdistances apart, so that the proper side may be presented to the pawl D.The pawl D, is thrown out of the notches by operating the lever E, asbefore stated. Any proper feed motion may be given the carriage B, andset screws (g) are placed underneath the carriage J, by which its throwor length of stroke is regulated. The collar I, supports the stuff S, orholds it firm, preventing all tremor while the stuff is being operatedupon. The edges of the tools Q, R, may be raised or lowered, so as to beplaced in a proper relative position with the stuff S, by adjusting thebeds O.

The above machine is extremely simple, works rapidly and well, may becheaply constr ucted, and is not liable to get out of reair.

Having thus described my invention, what I claim as new and desire tosecure by Let- 3. I also claim the polygonal notched bar ters Patent,isor gagerack C, arranged as shown, by Which l. The sliding carriage J,With tools Q, R, the movement of the carriage B, is regulated attachedto it as shown, the carriage J, being according to the character ornature of the 5 Iitted transversely on a carriage B, substan- Work to bedone, and the stuff beaded in the 15 tially as shown, for the purposespecified. desired manner.

2. I further claim the carriage J, in com- I P. C. CAMBRIDGE, JR.

bination With the collar I, and cutters Gr, Gr, Witnesses: when theabove parts are placed onthe car- WM. TUsoH, 10 rage B, and operating asdescribed. JAMES F. BUGKLEY.

